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Audio compression is applied in a variety of systems for efficient transmission and storage of digital audio signals. Example systems are mobile phone systems, internet and multimedia communication systems, in-car communication, home entertainment and broadcasting. Audio coding or compression is concerned with reducing the number of information bits used to represent the audio signal while maintaining an application specific acceptable quality and experience. Development in this area is focused on providing high audio quality while at the same time using a reduced number of bits transported in the air due to limited capacity in wireless links.
A lot of the audio content in future cellular networks will be real time multi-channel signals. For high quality audio services consumers also expect an ever increasing wish for natural low latency communication. However low latency compression forces the use of lower analysis block lengths, which in turn leads to a larger difficulty in using established psychoacoustic principles for the audio coder compression and synthesis steps.
This thesis proposal aims at exploring and implementing state-of-the-art low latency techniques for modelling, analysis and synthesis in an existing audio encoder design; and based on that design, select and optimize the compression tools to obtain high coding quality at medium bit rates and latencies lower than 5 ms.
Ericsson Research
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Primary country and city: Sweden (SE) || || Luleå || Stud&YP
Req ID: 270993
23-03-2024
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